Flexible Electrochemical Sensor for Hydrogen Peroxide Detection by Employing WO₃/g-C₃N₄ Nanostructures

Journal of The Electrochemical Society, Journal Year: 2023, Volume and Issue: 170(5), P. 057506 - 057506

Published: May 1, 2023

This paper describes the fabrication of WO 3 / g -C N 4 and use a flexible carbon cloth (CC)-based nonenzymatic detection hydrogen peroxide (H 2 O ). The was prepared using hydrothermal method characterized various techniques such as field emission scanning electron microscopy (FESEM), powder X-ray diffraction (PXRD), Fourier transform Infrared (FTIR), photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis. Further, electrodes were fabricated CC conductive support modified with different samples nanostructures (1-WO 2-WO electrochemical investigations revealed that 1-WO /g-C /CC, /CC have strong electrocatalytic activity than towards H , which can be attributed to surface properties, conductivity resultant interactions in 4. Furthermore, demonstrated sensitivity 78 μ A mM −1 cm −2 59 respectively, used measure concentration range 0.003–0.03 mM. In addition, LOD estimated for sensor 2.07 M 2.53 M, respectively. These findings suggest high stability has promising future development sensors.

Language: Английский

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Review—Exploring Technological Innovations of Doped Rare Earth Materials

ECS Journal of Solid State Science and Technology, Journal Year: 2023, Volume and Issue: 12(4), P. 047006 - 047006

Published: April 1, 2023

The manuscript reflects the implications of rare-Earth elements, which comprise an important class material and are essential for numerous technological improvements. Their research has gradually advanced due to their peculiar chemical physical characteristics. versatility will encourage development energy-efficient innovations. Interestingly, materials based on elements have been closely studied in conjunction with several contemporary biologically advances targeted therapies, adequately overcome neurological problems. provides a thorough overview multiple effects made rare Earth’s, especially within field neuroscience research.

Language: Английский

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Automated Quantification of DNA Damage Using Deep Learning and Use of Synthetic Data Generated from Basic Geometric Shapes

ECS Sensors Plus, Journal Year: 2024, Volume and Issue: 3(1), P. 012401 - 012401

Published: Jan. 24, 2024

Comet assays are used to assess the extent of Deoxyribonucleic acid (DNA) damage, in human cells, caused by substances such as novel drugs or nano materials. Deep learning is showing promising results automating process quantifying percentage using assay images. But lack large datasets and imbalanced data a challenge. In this study, synthetic comet images generated from simple geometric shapes were augment for training Convolutional Neural Network. The model trained augmented compared with exclusively on real It was observed that use not only gave significantly better coefficient determination ( R 2 ), but also resulted more robust i.e., less variation without data. This approach can lead improved while smaller dataset, saving cost effort involved capturing additional experimental annotating them. Additional benefits include addressing datasets, privacy concerns. Similar approaches must be explored other low domains extract same benefits.

Language: Английский

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RGO-g-C₃N₄-Co₃O₄ Composite Modified Platinum Electrode for Electrochemical Detection of Dopamine

Journal of The Electrochemical Society, Journal Year: 2024, Volume and Issue: 171(11), P. 117507 - 117507

Published: Oct. 30, 2024

A novel RGO-g-C 3 N 4 -Co O composite modified platinum electrode with significant sensing performance for dopamine was fabricated. Herein, hybrid nanostructure could boost the electrocatalytic of nanoparticles by avoiding clustering nanoparticles. These spinel-based composites are stable and affordable materials. Electrochemical impedance spectroscopy revealed enhanced electron transfer at electrode, as evidenced lowest charge resistance (Rct) RGO-g-C₃N₄-Co₃O₄/Pt electrode. An increased electroactive surface area compared to bare other Pt electrodes obtained. Several experimental parameters were optimized maximize sensitivity, including choice supporting electrolyte pH. Cyclic voltammetry conducted varying scan rates confirmed that oxidation followed a diffusion-controlled process. The exhibits outstanding activity, detection limit low 8.10 × 10 −7 M, demonstrating wide linear range between 2.00 −6 M −4 M. Selectivity tests indicated sensor reliably detect in presence common interfering substances such NaCl, KCl, glucose urea, ascorbic acid, uric acid L-dopa. This sensitivity selectivity validated both synthetic blood urine samples, providing electrode’s potential real-world applications diagnosis neurodegenerative diseases.

Language: Английский

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An Electrochemical Sensor for Selective Detection of Cu²⁺ by using a self-Assembled Cu Coordinated β-cyclodextrin- nitrogen-Doped Carbon Quantum Dots Composite

Journal of The Electrochemical Society, Journal Year: 2022, Volume and Issue: 169(11), P. 117508 - 117508

Published: Nov. 1, 2022

Nitrogen-doped carbon quantum dots (N-CQDs) were synthesized by one-step hydrothermal method using citric acid as source and urea nitrogen source. β -cyclodextrin ( -CD) is a cyclic oligosaccharide with unique hollow structure, which beneficial to the enrichment of metal ions on electrode surface while reducing agglomeration maintaining conductivity. When Cu 2+ coordinated -CD, it can further increase affinity for recognize more sensitively. Therefore, we -CD form copper ion (Cu- -CD). By self-assembly, prepared N-CQDs Cu- combined -CD/N-CQDs composites. The electrochemical sensor constructed -Cd/N-CQDs successfully realizes selective detection in range 1–125 μ mol l −1 , lowest limit 0.094 . In actual water samples, Recovery was between 92% 120%, RSD 2.3% 5.2%. composite expected be non-toxic, pollution-free heavy water.

Language: Английский

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Exploring the Influence of Temperature and Time on the Formation and Properties of 3D Flower-Like MoS₂ Nanostructures Synthesized via Hydrothermal Method

ECS Journal of Solid State Science and Technology, Journal Year: 2023, Volume and Issue: 12(9), P. 097004 - 097004

Published: Sept. 1, 2023

In this study, a simple hydrothermal method was employed to synthesize 3D flower-like MoS 2 nanostructures. The influence of different synthesis temperatures on the structural, electronic, optical and morphological properties nanostructures thoroughly investigated, optimal temperature identified as 220 °C. Additionally, we conducted further optimization determine most suitable reaction time, which found be 24 h. characterization synthesized nanostructures, employing various techniques such X-ray diffraction, Raman spectroscopy, Mott-Schottky analysis, UV–vis-NIR spectroscopy field emission scanning electron microscopy, unveiled well-defined crystallinity, reduced thickness uniform morphology, under optimized conditions. Notably, increased from 180 °C °C, band gap exhibited notable increase 1.72 2.35 eV. analysis confirmed our findings, revealing lower values flat potential carrier concentration for (220 °C), indicative higher crystallinity with fewer defects. These comprehensive findings not only underscore significant impact time but also hold promising implications diverse applications, including sensing, energy storage, well photocatalysis hydrogen evolution reactions organic pollutant degradation.

Language: Английский

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A WO₃-NPs/MEMS NH₃ Gas Sensor

Journal of The Electrochemical Society, Journal Year: 2023, Volume and Issue: 170(3), P. 037506 - 037506

Published: Feb. 23, 2023

This study exhibits WO 3 nanoparticles (NPs) by using ultrasonic wave grinding and fabricates a –NPs/MEMS gas sensor. The experimental results show that the – NPs/MEMS sensor responds better to NH than CO, CO 2 , SO . In terms of stability reproducibility sensor, average sensing response is about 16% there an inaccuracy <±0.5% when operated at 142 °C with 1.3 ppm gas. –NPs has -thin film original-WO powder sensors. shows have good

Language: Английский

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Nanodevices in neurological infections: an update

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 51 - 67

Published: Jan. 1, 2024

Language: Английский

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Electrochemical Detection of Melatonin at Nano-Sized Highly Boron-Doped Diamond Electrode

Journal of The Electrochemical Society, Journal Year: 2024, Volume and Issue: 171(8), P. 087504 - 087504

Published: Aug. 1, 2024

This work investigates the electrochemical oxidation of melatonin at boron-doped diamond electrodes and demonstrates significant enhancement in detection using highly nanopowder (h-BDD). Employing differential pulse voltammetry, Tween-coated h-BDD modified screen-printed (Tween/h-BDD/SPE) showed two linear response ranges for melatonin: 0.057–10 10–200 μM, with sensitivities 390 ± 36 72.2 3.4 μA mM –1 , respectively, a limit (3S b /m) 0.017 μM. The Tween/h-BDD/SPE demonstrated good selectivity against common interferences such as tryptophan, serotonin, lactate, cytidine, cytosine, urea. analytical utility was validated by quantifying commercial pharmaceutical tablets, achieving close to 100% recoveries.

Language: Английский

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Review–Modern Data Analysis in Gas Sensors

Journal of The Electrochemical Society, Journal Year: 2022, Volume and Issue: 169(12), P. 127512 - 127512

Published: Dec. 1, 2022

Development in the field of gas sensors has witnessed exponential growth with multitude applications. The diverse applications have led to unexpected challenges. Recent advances data science addressed challenges such as selectivity, drift, aging, limit detection, and response time. incorporation modern analysis including machine learning techniques enabled a self-sustaining sensing infrastructure without human intervention. This article provides birds-eye view on technologies realm sensors. While elaborating prior developments related analysis, this is poised be an entrant for enthusiast domain

Language: Английский

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